Why the need to convince the other that one's more right than the other? That 'their' aikido is superior to...whatever.
I strongly believe that a teacher ultimately gets the students he deserves and implicitly the student finds the teacher he deserves.
Many Aikidoka's have changed teachers in an attempt to find confirmation to what they believe is 'good' Aikido. For years they may practise and at some day encounter someone that adjusts their view of what good Aikido is and decide to pursue that particular road.
This is what i think 'finding your way'...
In the whole process what others think is completely irrelevant. You do what you believe is best and do not try to impose your opinion onto others. But an opinion you may off course have
When asked for you opinion it is a call of (good) judgement whether or not to do so. Pick your fight.
Suffice it to say many Aikido styles/forms exist, choose wisely